Harry was spotted writing lyrics for his song 'Two Ghosts' in a notebook.

They read: “Same lips red, same eyes blue / Same white shirt, couple more tattoos / But it’s not you, and it’s not me / Tastes so sweet, looks so real, / Sounds like something I used to feel / But I can’t touch what I see / We’re not what we used to be / We’re not who we used to be / We’re just two ghosts singing in the…”

And fans are convinced that the red lipstick is a reference to Taylor's signature makeup look.

She also wore the look in the video for her song Style that fans think is about Harry.

The lyrics read: "You got that James Dean daydream look in your eye / And I got that red lip, classic thing that you like / And when we go crashing down, we come back every time / 'Cause we never go out of style, we never go out of style / You've got that long hair slick back, white t-shirt..."

Fans think Taylor's song 'Style' is about Harry (Image: Getty Images North America)

Fans have rushed to Twitter to share their hopes that 'Two Ghosts' is about Taylor – and compare the spooky similarities with 'Style'.